TY - JOUR
T1 - Detection algorithms for FBMC/OQAM spatial multiplexing systems
AU - Lai, Kuei Chiang
AU - Chen, Chi Jen
N1 - Funding Information:
Manuscript received November 4, 2020. Manuscript revised February 9, 2021. Manuscript publicized March 22, 2021. †The author is with the Department of Electrical Engineering, National Cheng Kung University, Tainan City, Taiwan. ††The author is with the Realtek Semiconductor Corp., Hsinchu, Taiwan. ∗This work was supported by the Ministry of Science and Technology, Taiwan, R.O.C., under Contract MOST 109-2221-E-006-184. a) E-mail: [email protected] DOI: 10.1587/transcom.2020EBP3165
Publisher Copyright:
Copyright © 2021 The Institute of Electronics, Information and Communication Engineers
PY - 2021
Y1 - 2021
N2 - In this paper, we address the problem of detector design in severely frequency-selective channels for spatial multiplexing systems that adopt filter bank multicarrier based on offset quadrature amplitude modulation (FBMC/OQAM) as the communication waveforms. We consider decision feedback equalizers (DFEs) that use multiple feedback filters to jointly cancel the post-cursor components of inter-symbol interference, inter-antenna interference, and, in some configuration, inter-subchannel interference. By exploiting the special structures of the correlation matrix and the staggered property of the FBMC/OQAM signals, we obtain an efficient method of computing the DFE coefficients that requires a smaller number of multiplications than the linear equalizer (LE) and conventional DFE do. The simulation results show that the proposed detectors considerably outperform the LE and conventional DFE at moderate-to-high signal-to-noise ratios.
AB - In this paper, we address the problem of detector design in severely frequency-selective channels for spatial multiplexing systems that adopt filter bank multicarrier based on offset quadrature amplitude modulation (FBMC/OQAM) as the communication waveforms. We consider decision feedback equalizers (DFEs) that use multiple feedback filters to jointly cancel the post-cursor components of inter-symbol interference, inter-antenna interference, and, in some configuration, inter-subchannel interference. By exploiting the special structures of the correlation matrix and the staggered property of the FBMC/OQAM signals, we obtain an efficient method of computing the DFE coefficients that requires a smaller number of multiplications than the linear equalizer (LE) and conventional DFE do. The simulation results show that the proposed detectors considerably outperform the LE and conventional DFE at moderate-to-high signal-to-noise ratios.
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U2 - 10.1587/transcom.2020EBP3165
DO - 10.1587/transcom.2020EBP3165
M3 - Article
AN - SCOPUS:85114409013
SN - 0916-8516
VL - E104B
SP - 1172
EP - 1187
JO - IEICE Transactions on Communications
JF - IEICE Transactions on Communications
IS - 9
ER -